OH 350 4 bolt main block

[rsmarr1982]

i have a 350 4 bolt main block 2 piece rear main std. bore. with main caps asking $200 SHIPPED (to your closest fastenal company retail store in the cont. 48). fastenal has over 2000 stores in the us if your interested go to fastenal.com and locate your store of choice.

[HotRod C/10]

what is the casting #?

[rsmarr1982]

Originally Posted by HotRod C/10

what is the casting #?

i will check it out first thing in the morning. you want the number in the rear where bell housing bolts up or number above the water pump mounting spot?

[HotRod C/10]

bellhousing area please

[rsmarr1982]

Number is 397000
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[Oddfire]

I believe you mean 3970010.

[J kippin]

could you tell me what year the block is and the condition of the bores and mains...I will take it if it is a 71 block with good bores and mains

[rsmarr1982]

correct i unburied it today there is a "1" in there casting id says 69-79. there is light rust on bores its been sitting since mid 90's . i would have any engine bored before putting any money into it anyway , boring is not expensive compared to tryin to save a couple hundred and have maybe have one cylinder burn a lil oil.

[J kippin]

Boring is not a problem.. I just want to be sure it does not need to have liners installed or has had the mains spin and need to be align bored. What are the front pad numbers?

[rsmarr1982]

The front Id cannot be made out sorry
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[J kippin]

what is the date code on the block?

[rsmarr1982]

Only codes are on back by bellhousing and suffix code on front which cannot be made out
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[J kippin]

it should have a 3 or 4 digit code on the back of the block near the cast number or the right side of the bell housing area. It will be a letter to designate the month next will be the day and the last year cast. It may also have a circle with a arrow in the middle showing the time of day and shift it was cast.
I wont to be sure it is a 71 or earlier block. most blocks are cast a few months before production but a few earlier ones have been used.
The stamped numbers don't mean a whole lot to me.. other than it may show as a truck block. If this was a Corvette I would want a numbers stamped block. Most of the time the numbers are milled during decking, or it may be a replacement. I have found the numbers at the 12 o clock position above the timing cover.

[rsmarr1982]

Originally Posted by J kippin

it should have a 3 or 4 digit code on the back of the block near the cast number or the right side of the bell housing area. It will be a letter to designate the month next will be the day and the last year cast. It may also have a circle with a arrow in the middle showing the time of day and shift it was cast.
I wont to be sure it is a 71 or earlier block. most blocks are cast a few months before production but a few earlier ones have been used.
The stamped numbers don't mean a whole lot to me.. other than it may show as a truck block. If this was a Corvette I would want a numbers stamped block. Most of the time the numbers are milled during decking, or it may be a replacement. I have found the numbers at the 12 o clock position above the timing cover.

Is a pre 71 block that much different ? The only number possible to see when its in a truck is the casting id
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[CC69Rat]

J kippin, .. I might be uncovering some stuff here that you don't want me too If so, man I apologize.

But, what you're probably looking for is an 010/020 stamp under the timing sproket on the cam gear and / or a stamp on the main caps with the numbers beginning 24xxx.

rsmarr1982, it would be well worth your time to check these two places.. hint.hint


Just trying to help.

[rsmarr1982]

It is an 010/020. I know that.
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[CC69Rat]

post 71 they were a little 'less' nickle/tin content. IF this is a real High Nickle core, somebody grab it. These are getting harder and harder to find. Dirt Trackers use them a lot.

[J kippin]

okay like I said I will take it just as long as the other casting numbers check out.

[rsmarr1982]

It is a 75 block
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[J kippin]

Sorry not quite what I am looking for I already have a few of those Iam looking for one a little older.

[rsmarr1982]

pics

[rsmarr1982]

Anyone? Id hate to just scrap it
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[rsmarr1982]

$150 shipped to your nearest fastenal store. after today it goes to the scraper.

[mrdana60]

Wouldn't junk it. Someone needs it. Lol. Maybe someone gets it.

[rsmarr1982]

im in process of cleaning out my parents garage and ive have stuff like this in there since i was a teenage at home . i just dont have room for it .